Paper-feed for perforating-machines.



E. G. CLARKn PAPER FEED FOR PERFOHATING APPLICATION FILED JAN. 2,

MACHINES.

Patented Aug. 25, 1914,

2 SHEETS-SHEET l.

E. G. CLARK.

APPLICATION FILED JAN. 2, 1914.

Patented Aug. 25, 1914-.

2 SHEETS-SHEET 2.

5w l I I l I I i I I I I I I l f l l l l l l I I l l l l I l l I '.:IL

PAPER FEED POR PERFORATING MACHINES.

i N KN v .NNn 1 W f o@ ma@ n? I'Hl; MORRIS PE i595 C0.. PHoTOi/I'HQ, WASHING TON. D. C.

UNITED sTATns PATENT OFFICE.

ERNEST e. CLARK, or mi KALB, ILLINOIS, Assreivos To MELVILLE CLARK PIANO COMPANY, or CHICAGO, ILLINOIS, `A CORPORATION or ILLINOIS..

To all 'whom it may concern.'

Be it known that I, ERNEST G. CLARK, a citizen of the United States, residing at De Kalb, in the county of Dekalb and State of lllinois, have invented new andusefulInrr proveniente in Paper-Feeds for Perforating- Machines, of which the following is a speci` fication, reference being hadto the accompanying drawings, forming a part thereof.

rFhe purpose` of this invention is to provide an improved mechanism for drawing webs of paper through av machine in which the same is perforated for such purposes as note sheets or automatic controller sheets for pneinnatically and electrically operated mechanisms.

lt consists in the elements and features of construction shown and described as indifl cated in the claims. 4 v

In the drawings z-f-,Figure 1 is atop plan view of the delivery plat-form of a perfow rating machine equipped with this invention. Fig. 2 is a sectionat the line 2-2 on Fig. 1. Fig. 3 is a detail sectionon a much i enlarged scale at `the line 8--3 on` Fig.

Fig. dis a section at the line /twll on Fig. 8 showing in plan view the paper-grip operating cams. Fig. 5 is a view similar to Fig. d showing the Agrip releasing cams.

rlhe webs of paper to be perforated in a machine of the character for which this invention is designed are customarily led to the perforating machine from spools, as many as the number of sheets to be perforated at once, usually about fifteen; and `having passed through the machine, the entire fifteen sheets .i super-posed are engaged as a solid blanket, and operated upon bodily to draw them all together throughthe perforat ing machine, with the short step-bystep ac-` tion necessary for the proper operation of theperforating machine.` Only the delivery platform of` lthe perforating machine is shown in the drawings, the preceding parts of the mechanism having no` specific relation to the features of this invention.

ln the drawings, the delivery platform is represented as a skeleton table, 1, supported by suitable legs, 2, having journaled underneath it at the receiving end the shaft,`3, of the ratchet wheel, 4, and sprocketwheels, 5, 5, for driving the feed chains, 6, 6, and at the opposite or delivery end, the shaft, 7, of the idler sprocket Wheels, 8, 8, for the said Chains.

e Specification of Letters Patent. Application led January 2, 1914. y Serial No. 809,845.

PAPER-FEED FOR PER'FORATING-MACHINES. i

Patented Aug. 25, 1914.

9 is afeedpawl and 10 is a detent pawl engaging the ratchet wheel., 4;, `to give the necessary step feed movement to the chains. '.lhe feed pawl, 9, may be operated inany convenient manner not shown for givingit the proper reciprocation to actuate the` ratchet `wheel and its shaft. The skeleton table, 1, comprises cross plates, 12 and 13,

. respectively, near the receiving and delivery endsfor supporting the eains whichxoperate the paper gripping devices. These grip ping devices will first be described. They consist each of a bar, 14, connecting the Opposite links of the chains, G, G, being mountw ed upon the cuter side of the links so as to passfreely around the sprocket wheels which `drive `and carry the chains, and so as to travel above the table, 1, whose upper surfried-that is, the surface of the plates, 12,--A 1s In a plane a little below the path of travel of the inner or under side of the bar as it is carried from receiving to delivery end by the travel of the chains.` lnnnediately Outside the paths of the upper or operating ply of the chains, there are mounted upon `the table track bars, 15, 15, upon whose upper edges the ends of thegripper bars, 14,

ride and are guided in theiripassage from receiving todelivery end of the table, and to retain the gripper bars accurately in their path of tra-vel,-that is, prevent them from oscillating endwise as` they move over the length of the table,angle bars, 16, 1G, are mounted upon the margin of the table i1n-` mediately outside the track bars, 15, the vertical flange of the` angle bars extending up beyond the upper edge of the track bars so `as to afford stopsfor the ends of the gripper bars, 1&1.

Upon the gripper bar near each end but inside the point of attachment of the bar to the chain, there is mounted a grippcrwhich consists Ofa short rectangular sleeve, 17, encompassing the bar, `having pivotedin it above the bar a gripping jaw, 18, which ex tends inward from its pivot overhanging the bar Aat a` distance above the saine suiicient to admit the maximum thickness of the blanket of paper sheetsto `be gripped, and having itsinner end beveledor rounded on the under sideto adapt it to ride up easily On.to the edge of the blanket. A spring,r19, is provided reacting between the jaw, 18, and the bar,14to normally hold the jaw open; that is, tO hold its inner end up from the bar, as seen in full line in Fig. 3. The spring, 19, is free from attachment to the bar so that it does not interfere with the sliding of the sleeve and jaw on the bar, as hereinafter explained. To the sleeve, 17, under the gripper bar there is attached a lever arm, 20, which extends along under the bar inward from the sleeve. This lever has its inner end portion, 201, deflected*y upward toward the bar, and its inner extremity beveled at 2Gb, to adapt it for encounter with and actuation by a cam, 21, which is mounted on the under side of the bar and adapted to slide thereon from a position at which its sloping end, 21a, is a very short distance from the beveled end, 20h, of the lever, 20, .when the sleeve, 17, is at its outermost position shown in Fig. 8, to a position substantially as far removed inward from that posi-l tion asy the amount of movement which it is desired to give the sleeve', 17, in order to advance the jaw, 18, from its full line position shown' in Fig. 8, outside the margin of the blanket, A, of paper sheets to its position shown in dotted line in said Fig. 3 where it overhangs and grips the blanket. For thus sliding on the bar, the cam, 21, is provided with side wings, 21h, having int-urned lips 21C, which engage longitudinal grooves, 1&1", in the lateral edges of the bar,141. Upon the under side of the sleeve, 17, it is provided' with a stud-and-roll abutment, 24, which is positionedv so as to encounter the sloping edge, 25a, of a cam, 25, mounted on the cross plate, 12, near the receiving end of the table. When in the travel of the chain the abutment, 24, encounters the cam edge, 25a, the sleeve, 17, is crowded inward along the bar, 14, a distance equal to the dimension of the cam, 25, transversely of the line of travel, which is a sufficient distance to bring the jaw, 18, to a position overhanging the margin of the paper blanket, as seen in dotted line in Fig. 3. The inward thrust of the cam is limited by a stud, 28, which projects from the under side of the bar, 14, and stops the lever, 20, at the end of a slot or notch, 20, in the end of said lever. Upon the cross plate, 12, there is mounted a sec* ond ca'm, 2G, having a sloping edge,4 26a, Vpositioned in the path of a stud-and-roll abutment, 27,y which projects from the under' side of the cam, 21, in position to be encountered by said abutment substantially at the instant at which the'abutment, 211, hav-` ing passed ofi' the sloping edge, 25a, of the cam,- 25, stands in the position shown in dotted line in Fig. e; that is, immediately after the jaw, 18, has been thrust inward so as to overhang to the full extent desir'edthe margin of the blanket, A.,y `The travel of the chain continuing from 'this`point, the cam, 26, by its sloping' edge, 26, crowds the cam, 21, Voutwarchgthat is, toward the sleeve, 17,-'and its sloping edge, 21, encountering the beveled edge, 21", of the lever, 20, crowds-l the inner end of said lever down, roclnng the sleeve, 17, on the bar so as to bring the jaw, 18, down'A tightly upon the paper blanket Vwhose margin it over-hangs. The outward thrust of the cam, 26, upon the cam, 21, is limited by the same pin, 28, which stopsy the inward thrust of the lever, 20, the outer endl of the cam, 21, being provided with a notch, 21d, the bottom of which encounters the pin at the proper limit of outward thrust v of the cam, 21.

The process above described is performe at both margins of the paper blanket, the gripping devices described being duplicated on the two ends of the bar, 14, and the paper blanket is thereby simultaneously gripped and held at opposite marginal points and carried by the chains as they travel outward over the table. A suiiicient number of bars, 141, with gripping devices as described are provided to insure the paper being held without slippage. As illustrated, in the entire circuit of the chains there are fourteen such bars with the grippers upon the opposite end portions of each. The blanket having been thusv gripped at the receiving end of the table is held by the grippers until they successively approach the delivery end where the table has upon the cross plate, 13, cams, 29 and 30, positioned for reversing the movements which have been performed by the cams, 25 and 26, as the grippers passed over the plate, 12. The cam, 29, has a sloping edge, 29a, positioned for encounter of the abutment, 27, traveling 4in the path indicated by the dotted line position in Fig. 3, the deflection of said edge being in direction to force the abutment outward as the work travels, moving it back to its position on the bar shown in full line on Fig. its position with respect to the calm being shown in dotted line in Fig. 5. This action, it will be observed, withdrawing the cam, 21, from the lever, 20, releases the grip of the jaw, 18, upon the paper blanket. vSubstantially at the instant at which this is effected by the abutment, 27 reaching ahe dotted line position shown in Fig. 5, the abutment,24, encounters the sloping edge, 30, of they cam, 30, and is by it'deflected outward, causing the sleeve, 17, to withdraw the jaw, 18, to the position shown in full line'in Fig. 3, clearing it from the paper blanket, which is thereby left free to be delivered beyond the delivery end of the table.

I claim 1. In a web-feeding mechanism, in combination with a table onto which the web is delivered; bars extending transversely of the table, and means for propelling them transversely in an endless path comprising courses longitudinal `or the table above and below the same web-clamping grippers mounted on the bars, movable thereon to positions outside of the lane in which the web s delivered; cam-encountering abutments en the gripper-s; cams on the table positioned for encounterl with the aloutments alter the hars have entered upon their upper eeiu'se over the table, and adapted by such encounter' to move the grippers inward to cause their jaws to overhang the margins el the wel); means for clamping the grippers on the web and additional cams on the `talole positioned for encounter with the clamping means to clamp the grippers after they have been moved inward by the irst mentioned cams; both said sets oi cams heing near the entering end oi the table, and additional cams near the delivery end of the table positioned for irst releasing the clampi ing devices and afterward withdrawing the" movable grippers.

y Q. In a web-feeding mechanism, in combination with the table, the endless belts and the transverse hars connecting the belts; grippers mountedV for rocking i and sliding on thehars, comprising each a jaw above the har projecting inward for overhangingz the `path et the web, a lever below the bar projecting inward therefalong, and a spring re acting` between the gripper and thebar, to

normally hold the j aw and the leverelevated at their inner ends; a cam mounted niovably on the har for encounter with the innjer end oi the lever to wedge 1t down` Wvard; camencounter1ng ahutments on the gripper and cam, andcams on the table positioned ior encounter of said aloutments successively as the bar travels along the table from the entering end, said cams being adapted respectively to move the gripper in ward to cause its jaws to overhangthe web,

and to move the cam on the bar outward to clamp the jaw onto the web.

3. ln a paper feeding mechanism, in comy bination with the table, the parallel endless belts and their carrying and operating and `driving wheels, respectively, mounted on the table for travel ot' a ply ofeach belt longitadinally there-above from receiving to de-` livering end; hars connecting the belts; a

Wehengaging gripper mounted on each bar, eominjsing a jaw adapted to overhang the margin oi? the weh and a lever under the bar :ter clamping the jaw onto the web; a cam movable on the har for operating the leve means for moving the gripper-s inward for moving the cam on the bar for clamping; cams on the table near the delivery end, po-

sitioned tor encountering the lever-operating cam and the gripper respectively, to

iirst give the cam its lever-releasing Inovein an endless path comprising courses longitudinal of the table above and below the same; means carried hy the bars for clamping the margins ofthe web, and earns on the table adapted ior operating said clamp- 1 ing` devices by the movement of the hars A longitudinally of the table at the entering and delivering ends thereof, the table having longitudinallyezitending rip-standing ribs for resisting the tendency ofthe calns to crowd the reds endwise in operating the clamping devices.

In testimony whereof, I have hereunto set my hand at De Kalb, Ill.,` this 27` day of "Dee, 1913.

ERNEST s; einen.

Witnesses: i i

i l-LBSANFORD,

M.L.Fonn.

Copies of this patent may be` obtained for five cents each, by addressing' the Commissioner of Patents, Washington, 10. C. 

